Improvement in enameled cast-iron retorts



duurt Sittin @anni effin,

THOMAS D. PHILLIPS, or OASSADAGA, ANn THOMAS s. PHILLIPS, OF BUFFALO, ASSIGNOBS To BBNONI S. BROWN AND THOMAS S. PHILLIPS, or BUFFALO, N. Y.

Letters Patent No. 109,658, 1aed November 29; 1870.

IMPROVEMENT IN ENAMELED CAST-IRON RETOTS.

The Schedule referred to in these Letters Patent 'and making part oi the name.

Y We THOMAS D. PHILLIPS, of Gassadaga, in the f dentists, in the manufacture of nitrous-oxide gas.

Amongl the. objections which are urged-against the glass retort 'are the following:

The great liability of theretorts breaking, .which results in a loss of the retort, andthe more serious consequences which followfan explosionduring the process ot' distillation. The great care required in handling them, the time necessarily employed in filling them through the small opening at the end ofthe neck. thereof', and the extra expense involved by the` use of "the nitrate of ammonia in aY granulated state,-

which costs about five cents more per pound than the material does in the form in which it is first produced, z'. e. in lumps.

Ourinven-tion consists of a retort made of cast-iron,

with the neckvportion cast 4separate fromv the body, both of which are enameled or linedon the inside and at the abutting or contiguous edges with porcelain, and the joint between the two made tight by means'of an interposed packing of India rubber or other suitable material, which, in connection with the lined edges, prevent the contents of theretort coming in contact with the iron, whereby is produced a retort of the most durable character, which can be readily filled by detachiug the parts, handled without extra care, and used without fear or apprehension Oi' it breaking at a time, perhaps, that its use is most needed. In the accompanying drawingi Figure I is a section of a retort on a scaleof onehalt'sizc.

Figure II is a plan thereof.

Figure-III is a section ot the end of the neck or mouth ofthe retort,- of full size.

Figure IV'is a fragmentary section through the joint, and

Figure Va plan of Fig. 1V, also of full size.

Like letters of reference designatev like parts in all the figures.

A is the body of the retort;

A', a neck-portion thereof; and v .a, the porcelain lining of both parts, toy which it is applied in the usual manner in which kettles, &c.,are lined with'the same material, it being understood that enamels containing lead as aningredient should-not be used.

The upper edge of thebody of the retort is made angular or rounded, as shown at a', for a purpose presently to be explained, while the contiguousedge of the neck-portion is cast with'a groove made to receive andconform with said rounded edge.

b is the rubber orother suitable packing interposed inthe joint thus formed.

The parts A A are Asecured together by means of' slotted flanges or ear projections c c, clamped together by bolts d, as represented.

The body A is ca'st with a ledge or shoulder, e, on its outer surface, extending around it so as to form a suspensionsupport Afor the retort when placed in a hole in the stove or furnace in which it is heated.

H represents a glass tube or nozzle projecting and tted in this upper end ot' the neck ot' the retolt by means oi' a surrounding packing-ring or thilnble, t', of rubberor other suitable material, with which'conuects ythe rubber or other flexible pipe that conveys the gas to the receiver when employed in the distillation ot .nitrous-oxide gas.

The packing i serves to arrest the liquid as it works up along' the neck of' the retort, which, with the ordinary glass retort it sometimes does, and passes over in considerable quantity into the receiver or purifying vessel.

lThe rounded `upper edge of the body A prevents the liquid from working in the joint and destroying the packing, which we have found from experiment it sometimes wiil do when this ,joint is made reversed, or with the incline from the inner edge running in an opposite direction.

The construction oi the joint enables the neck por-` tion to be readily disconnected for filling the retort or emptying it of the residuum.

- A retort, as a' new article of manufacture, made of cast-iron, in two parts, A A', lined with porcelain on the inside and at the edges of lthe joint, and secured together with an interposed packing, b, as hereinbefore set forth.

' T. D. PHILLIPS. T. S. PHILLIPS..

Witnesses:

JNO. J. BONNER., It. B. DnvENPOn'r. 

